卡尔费休库仑滴定法测定甲烷氯化物中微量水分  

Determination of Trace Water in Methane Chloride with KF Coulometric Titration Method

作　　者：沈治荣[1,2] 胡必明[2] 何红莲[2] 

机构地区：[1]四川大学化工学院,成都610065 [2]自贡鸿鹤化工股份有限公司,四川自贡643000

出　　处：《四川化工》2009年第5期38-40,共3页Sichuan Chemical Industry

摘　　要：本文建立了卡尔费休库仑滴定法测定二氯甲烷和三氯甲烷工业产品中微量水分测定的分析方法，此方法实现了从取样到分析的全封闭操作过程。二氯甲烷和三氯甲烷的加标回收率分别97．5％～106．2％和88．2％～103．1％，RSD分别为5．3％和9．7％。该方法准确、快速、简便，完全能够满足甲醇法生产甲烷氯化物产品中微量水分测试需要。In this paper, the Karl Fischer（KF）coulometric titration method was established for determination of trace water in dichloromethane and chloroform, which realizes fully closed operation from sampling to analysis. The recoveries of dichloromethane and chloroform were 97.5%- 106.2% and 88. 2%- 103. 1% respectively, RSD were 5.3% and 9. 7% respectively. This method is more accurate, simple and

关 键 词：水分 甲烷氯化物 卡尔费休库仑法 

分 类 号：TQ222.2[化学工程—有机化工]